James william poeeitt



. H or an equivalent device.

ing with the pulley the well-known ball-and- NITED STATES PATENT CEEICE.

JAMES WILLIAM PORRITT, OF GLEY, ENGLAND..

PU LLEY-H EAD.

SPECIFICATION forming part of Letters Patent No. 306,952, dated October 21, 1884.

Application filed August 13, 1884. (No model.)

can be xed in any requisite position when needed.

In the accompanying drawings, Figure l is an elevation, partly in section, of this device; Fig. 2, a view of the pulley and ball at right angles to that shown in Fig. l. Fig. 3 is a view of a modification.

A is the shell or jaw which carries the pulley B, the shell A being joined by a short neck with the ball G. A suitable socket, D, is provided and secured in any suitable manner or position. In Fig. 2 it is shown forming a head to the bar E, which ts into the trunk F, where it may be secured by the setscrew G or in other convenient manner. The ball may be iixed in its socket by the screw Thus by combinsocket joint I ani able to produce a pulley which can turn in any requisite direction and will adapt itself to the pull of the rope; but when desired it can be fixed by means of the screw kH. The trunk F can be sunk in the ground.

A vertical slot is provided in the side of the socket of joint to allow greater inclination of the head, (see NV, Fig. 3.)

' Having now described thesaid invention, I wish it to be understood that I claim and de sire to protect by United States Letters Patent- 1. The combination, with a pulley, B, ofthe ball-and-socket joint C D, substantially as and for the purpose specified.

2. The combination, with the bar E, of the y 

